Burxett



(No Model.)

W. BURNETT. RAILWAY GAR HEATER.

Patented Mar. 5, 1889.

Sms@

VILLIAM BRNETT, OF NEV YORK, N. Y., ASSIONOR 'lO JOHN ll.

Nrrnn STATES Artnr OFFICE.

G RAY, OF

SAME PLACE.

RAI LWAY-CAR H EATER.

SPECIFICATION forming part of Letters Patent No. 398,878, dated March 5, 1889.

Application filed March 29, 1887.

To oZZ 'whom it may concern.-

Be it known that I, WILLIAM BURNETT, a

citizen of the United States, residing at New York, in the county and State of New York, have invented certain new and useful Improvements in Devices for Heating the Cars ot' Steam-Railways, of which the following is a specification, retercnce being had to the accomp an ,vin g d ra wings.

M y invention relates to heating devices i which employ pipes as a means of conveying to ever7 part of the car the heat transmitted i are united in a similar half-turn elbow, D,

from the generator.

rlhe object of my invention is to provide a .heating device more simple, compact, and

manageable, and atthe same time more etl'ective, than any heretofore devised, and entirely tree from the danger ot tire, all stoves being i discarded.

M v invention consists in providing within cach car separately an arrangement ot' heating-pipes which presents a continuous and unbroken circuit through which air, steam, or water, or the like is impelled by a steam- |iet, which not only causes the medium selected to circulate rapidly through the heating-pipes, but by its condensation im parts its heat to the tluid bodyY impelled by it. and indirectly to the Vinterior surface of the pipes through which it is made to circulate, in]` combination with one or more devices to operaie in conjunction with the heatingpipes, the same having reference to the employment ol the several heat-conveying mediunis enumerated or their equivalei'its. 'lhe Q steam cn'lplolved is obtained [rom the loco-` motive-boiler through mains situated under i the several cars and connect-ed together by suitable hose. From the main so provided a branch pipe enters each car and connects with the heating device.

Referring to the drawings, Figure l is a side sectional elevation through the longitudinal axis of the instrument. Fig. 2 is a transverse sectional elevation on the line Y Y, Fig. l. Fig. 3 'is an end view of return-elbow connecting the outer ends of the heatingppes. Fig. il: is a side sectional elevation oi' a modified arrangement of the heating-pipes. Fig. 5 is a transverse sectional elevation on the line Y Y', Fig. 4:. Fig. 6 is an end view Serial No. 232,826. (No model.)

ol a metallic support for the inner circulating-pipe shown in Fig. 4. Fig. 7 is an end view of the return-cap employed in Fig. i.

Similar letters refer to si mil-ar parts throughout the several views.

The construction is quite simple. The heat ing-pipes A. and B are united at their outer end by a halt-turn elbow, so that a iluid-current passing outward through pipe A may pass through elbow C and back through pipe B without its movement being seriously retarded. The inner ends of the pipes A and B tl'irough which a fluid-current, passinginward through pipel B, may pass through elbow D into pipe A without serious retardation of movement, as before stated in reference to elbow C.

Elbowl) is provided with certain subsidiary devices which are used in the operation of the heater, sometimes, however, depending upon the medium or vehicle employed in the heating-pipes to distribute the heat transmitted from the generator. These subsidiary devices are a relief-valve, E; a steanrvalve, F, to regulate the steam-jetfor hcatingand impelli ng the heat-distrilniting medium through the heating-pipes: a steam-jet pipe, G, the end ot' which enters the mouth of pipe A or directs the steam-jets into the mouth of said pipe; a check-valve, ll, to prevent an`- discharge ot' water from the heating-pipes when the valve F is lett open; a waste-water valve, I, to permitthe escape of water from the heating-pipes when desired; a steam-1 rap, J, to automaticall)v permit the escape of walcr'i'rom the heating-pipes when valve l is open, but to hinder the escape oi steam; an air-valve, l, to discharge air from the heating-pipes when steam is to be employed therein as a medium, or to admit air to the heating-pipes when it is desired to discharge the water contained therein. The pipes represented are connected as follows, viz: Pipe L connected to the steammain under the car, and pipes )I and N discharge overboard through the car-Hoor. The heating-pipes A B extend through the ear longitudinallvaud are preferably placed close to the wall on either side and near the fioor of the car.

When air is to he employed as a medium,

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steam-valve F is opened, and the air contained in the pipes and connections A, C, B, and D is rapidly circulated through them, carrying With it the heat of the steam-j et derived from its condensation. The valve Imay now be opened to permit any Water of condensation to be discharged through the steamtrap J.

The employment of a current of air with which the steam from the impelling steam-jet intermingles is a very important feature of my invention as supplying a circulating inedium capable of assuming a very low temperture, which may, however, be raised to any degree by increasing the volume of the steam.- jet, or reduced to any degree not below the temperature of the surrounding atmosphere.

When steam is to be employed as a medium,

. air-valve K is opened for the escape of the inclosed air. The steam-valve F is 110W opened. When steam issues through the valve K freely, it should be closed. The valve I should remain open to carry off the Water of condensation through steam-trap J. l

Vhen hot Watenwhich I use preferably, is to be employed as a medium, the instrument does not require to be charged with water, as this may be supplied by steam-condensatiou Supposing all the valves to be shut and the circulating-pipes to contain air only, the steam-valve F is opened, andthe steam-jet will now cause a rapid circulation through the heating-pipes,

upon the surfaces of which the steam Will be condensed, soon iilling up the pipes with hot Water, which Will in continuance be circulated through the heating-pipes and kept at suitable temperature by the impelling steam-jet. When the WaterA of condensation rises up and fills the heating-pipes, it expels through the relief-valve E any remaining or accruing air which may have been present during the operation, and when entirely full the further accumulation of Water arising from the condensation of the iinpelling steam-j et will pass off through the relief-valve, which is but a lightly-loaded valve, in like manner. fithout this Water-relief the back-pressure would immediately cause the steam-jet to suspend action.

In the modilication shown at Fig. the pipe A, through which the outgoing current is conveyed, is placed concentrically within the pipe B, which is enlarged for this purpose. Through the annular space between the. two pipes the return-current passes to the place of beginning. The pipe A is open at both At its outer end and at intervals throughout its length the pipe A is supported by a spiderf (shown at Q, Fig. 6.) The steam j et-pipe enters the mouth of pipe A in either case, and the steam-current is through A, R, and B to the place of beginning, substantially as shown at A C B, Fig. 1.

The instrument, as shown at-Fig. l, has an amount of heating-surface equal to the arrangement shoWn at Fig. 4; but, While occupying little more space, the latter has double the capacity for storing heat, especially available when hot Water is used as a circulating medium. In case of any temporary interruption of the steam-supply this Would be advantageous as providing a reservoir of heat for present use.

The pipes A and B are preferably made straight, but may be bent in any form, as at C, Fig. l, that admits of the current iiowing freely through them under the act-ion of the steam-jet.

I Wish it to be understood that any valve operating to permit the escape of the medium as it accumulates in the pipes of the circuit falls Within the scop'e of my invention when combined with the circulating-pipes and jetpipe.

What I claim, and desire to secure by Letters Patent, is-

l. The combination, with the circuit of heating-pipes, of a steam-'jet pipe extending Within the said pipes and an automatic rclief-valve on the circuit-pipes, substantially as described.

2. A heater consisting of a continuous and unbroken circuit of pipes through which the circulating medium, consisting of airmingled With steam, is to be impelled, and a steamjet pipe extending Within the pipes of the circuit, the said circuit of pipes having' an automatic steam-trap, substantially as described.

A heater consisting of a continuous and unbroken circuit of pipes through which the circulating medium is to be impelled, a steamjet pipe extending Within the pipes of the circuit and having a controlling-valve, the said circuit of pipes having asteam-trap and an automatic relief-valve, so as to be employed at will either for heating with the combined medium of air and steam or with the medium of Water, substantially as and for the purpose described.

GUsTAvE DIETERICH, C. A. DIETERICH.

Having thus fully described my invention, A

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